LXR linux/drivers/media/usb/pvrusb2/pvrusb2-cx2584x-v4l.c

   1/*
   2 *
   3 *
   4 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License as published by
   9 *  the Free Software Foundation; either version 2 of the License
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 */
  17
  18/*
  19
  20   This source file is specifically designed to interface with the
  21   cx2584x, in kernels 2.6.16 or newer.
  22
  23*/
  24
  25#include "pvrusb2-cx2584x-v4l.h"
  26#include "pvrusb2-video-v4l.h"
  27
  28
  29#include "pvrusb2-hdw-internal.h"
  30#include "pvrusb2-debug.h"
  31#include <media/drv-intf/cx25840.h>
  32#include <linux/videodev2.h>
  33#include <media/v4l2-common.h>
  34#include <linux/errno.h>
  35
  36
  37struct routing_scheme_item {
  38        int vid;
  39        int aud;
  40};
  41
  42struct routing_scheme {
  43        const struct routing_scheme_item *def;
  44        unsigned int cnt;
  45};
  46
  47static const struct routing_scheme_item routing_scheme0[] = {
  48        [PVR2_CVAL_INPUT_TV] = {
  49                .vid = CX25840_COMPOSITE7,
  50                .aud = CX25840_AUDIO8,
  51        },
  52        [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
  53                .vid = CX25840_COMPOSITE3,
  54                .aud = CX25840_AUDIO_SERIAL,
  55        },
  56        [PVR2_CVAL_INPUT_COMPOSITE] = {
  57                .vid = CX25840_COMPOSITE3,
  58                .aud = CX25840_AUDIO_SERIAL,
  59        },
  60        [PVR2_CVAL_INPUT_SVIDEO] = {
  61                .vid = CX25840_SVIDEO1,
  62                .aud = CX25840_AUDIO_SERIAL,
  63        },
  64};
  65
  66static const struct routing_scheme routing_def0 = {
  67        .def = routing_scheme0,
  68        .cnt = ARRAY_SIZE(routing_scheme0),
  69};
  70
  71/* Specific to gotview device */
  72static const struct routing_scheme_item routing_schemegv[] = {
  73        [PVR2_CVAL_INPUT_TV] = {
  74                .vid = CX25840_COMPOSITE2,
  75                .aud = CX25840_AUDIO5,
  76        },
  77        [PVR2_CVAL_INPUT_RADIO] = {
  78                /* line-in is used for radio and composite.  A GPIO is
  79                   used to switch between the two choices. */
  80                .vid = CX25840_COMPOSITE1,
  81                .aud = CX25840_AUDIO_SERIAL,
  82        },
  83        [PVR2_CVAL_INPUT_COMPOSITE] = {
  84                .vid = CX25840_COMPOSITE1,
  85                .aud = CX25840_AUDIO_SERIAL,
  86        },
  87        [PVR2_CVAL_INPUT_SVIDEO] = {
  88                .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  89                .aud = CX25840_AUDIO_SERIAL,
  90        },
  91};
  92
  93static const struct routing_scheme routing_defgv = {
  94        .def = routing_schemegv,
  95        .cnt = ARRAY_SIZE(routing_schemegv),
  96};
  97
  98/* Specific to grabster av400 device */
  99static const struct routing_scheme_item routing_schemeav400[] = {
 100        [PVR2_CVAL_INPUT_COMPOSITE] = {
 101                .vid = CX25840_COMPOSITE1,
 102                .aud = CX25840_AUDIO_SERIAL,
 103        },
 104        [PVR2_CVAL_INPUT_SVIDEO] = {
 105                .vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
 106                .aud = CX25840_AUDIO_SERIAL,
 107        },
 108};
 109
 110static const struct routing_scheme routing_defav400 = {
 111        .def = routing_schemeav400,
 112        .cnt = ARRAY_SIZE(routing_schemeav400),
 113};
 114
 115static const struct routing_scheme *routing_schemes[] = {
 116        [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 117        [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 118        [PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
 119};
 120
 121void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 122{
 123        pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 124        if (hdw->input_dirty || hdw->force_dirty) {
 125                enum cx25840_video_input vid_input;
 126                enum cx25840_audio_input aud_input;
 127                const struct routing_scheme *sp;
 128                unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 129
 130                sp = (sid < ARRAY_SIZE(routing_schemes)) ?
 131                        routing_schemes[sid] : NULL;
 132                if ((sp == NULL) ||
 133                    (hdw->input_val < 0) ||
 134                    (hdw->input_val >= sp->cnt)) {
 135                        pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 136                                   "*** WARNING *** subdev cx2584x set_input: Invalid routing scheme (%u) and/or input (%d)",
 137                                   sid, hdw->input_val);
 138                        return;
 139                }
 140                vid_input = sp->def[hdw->input_val].vid;
 141                aud_input = sp->def[hdw->input_val].aud;
 142                pvr2_trace(PVR2_TRACE_CHIPS,
 143                           "subdev cx2584x set_input vid=0x%x aud=0x%x",
 144                           vid_input, aud_input);
 145                sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 146                sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 147        }
 148}
 149